/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/MeshQueryFunctions.h
Gets the number of vertices in the mesh. Note this may be less than the number of Vertex IDs used as some vertices may have been deleted.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintPure, Category="GeometryScript|MeshQueries", Meta=(ScriptMethod)) static int32 GetVertexCount ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh )